package PTA.javabianchengjichu2;

import java.util.Scanner;

public class ex25 {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String line = sc.nextLine();
        String str[] =  line.split(" ");
        int sum=0;
        int flag=0;
for(int i=0;i<str.length;i++){
    try {
        sum += Integer.parseInt(str[i]);
    }catch (Exception e){
        flag=1;
    }

}
        System.out.println(sum);
if(flag==1){
    System.out.println("attention");
}

    }
}
